_2019-06-26_

**This release upgrades OkHttp to Kotlin.** We tried our best to make fast and safe to upgrade
from OkHttp 3.x. We wrote an [upgrade guide][upgrading_to_okhttp_4] to help with the migration and a
[blog post][okhttp4_blog_post] to explain it.

 *  Fix: Target Java 8 bytecode for Java and Kotlin.


## Version 4.0.0-RC3

_2019-06-24_

    // our connection coalescing requirements are met. See also:
    // https://hpbn.co/optimizing-application-delivery/#eliminate-domain-sharding
    // https://daniel.haxx.se/blog/2016/08/18/http2-connection-coalescing/

    // 1. This connection must be HTTP/2.
    if (http2Connection == null) return false

    // 2. The routes must share an IP address.

    assertInvalid("http://.a/", "Invalid URL host: \".a\"")
    assertInvalid("http://../", "Invalid URL host: \"..\"")
  }

  @Test
  fun hostnameTelephone() {
    // https://www.gosecure.net/blog/2020/10/27/weakness-in-java-tls-host-verification/

    // Map the single character telephone symbol (℡) to the string "tel".
    assertThat(parse("http://\u2121").host).isEqualTo("tel")

      - name: Configure JDK
        uses: actions/setup-java@v4
        with:
          distribution: 'zulu'
          java-version: 17

      - name: Enable KVM group perms
        # https://github.blog/changelog/2023-02-23-hardware-accelerated-android-virtualization-on-actions-windows-and-linux-larger-hosted-runners/
        run: |

biz.mw biz.my biz.ni biz.nr biz.pk biz.pl biz.pr biz.ss biz.tj biz.tr biz.tt biz.ua biz.vn biz.wf biz.zm bizen.okayama.jp bj bj.cn bjarkoy.no bjarkøy.no bjerkreim.no bjugn.no bl.it black blackbaudcdn.net blackfriday blockbuster blog blog.bo blog.br blog.gt blog.kg blog.vu blogdns.com blogdns.net blogdns.org blogsite.org blogsite.xyz blogspot.ae blogspot.al blogspot.am blogspot.ba blogspot.be blogspot.bg blogspot.bj blogspot.ca blogspot.cf blogspot.ch blogspot.cl blogspot.co.at blogspot.co.id blogspot.co.il...

gg.ax
mc.ax
us.ax
xy.ax
nl.ci
xx.gl
app.gp
blog.gt
de.gt
to.gt
be.gy
cc.hn
blog.kg
io.kg
jp.kg
tv.kg
uk.kg
us.kg
de.ls
at.md
de.md
jp.md
to.md
indie.porn
vxl.sh
ch.tc
me.tc
we.tc
nyan.to
at.vg
blog.vu
dev.vu
me.vu

 *
 * Using a yubikey device as a SSL key store.
 * https://lauri.võsandi.com/2017/03/yubikey-for-ssh-auth.html
 *
 * Using PKCS11 support in the JDK.
 * https://tersesystems.com/blog/2018/09/08/keymanagers-and-keystores/
 *
 * Install OpenSC separately. On a mac `brew cast install opensc`.
 */
@SuppressSignatureCheck
class YubikeyClientAuth {
  fun run() {

  }

  @Test fun specialKInHostname() {
    // https://github.com/apache/httpcomponents-client/commit/303e435d7949652ea77a6c50df1c548682476b6e
    // https://www.gosecure.net/blog/2020/10/27/weakness-in-java-tls-host-verification/
    val heldCertificate =
      HeldCertificate.Builder()
        .commonName("Foo Corp")
        .addSubjectAlternativeName("k.com")